Where is the open circuit in the driver-side detonator circuit located?
2 Answers
An open circuit in the driver-side detonator circuit is generally located in front of the gear lever or beneath it. Relevant information about the four stages of the side airbag detonator is as follows: 1. Stage 1: The car crashes, reaching the detonation limit of the airbag system. The sensor takes 10ms from detecting the collision to activating the current. The detonator ignites the gas generator of the airbag, while the driver remains in an upright position. 2. Stage 2: The gas generator fully inflates the airbag within 30ms. After 40ms of the crash (at a speed of 50km/h), the driver's body begins to move forward. Since the seatbelt is diagonally fastened to the driver, it stretches as the driver moves forward, absorbing part of the impact energy generated during the crash. 3. Stage 3: 60ms after the car crash, the driver's head and upper body press against the airbag. The exhaust port behind the airbag allows the gas pressure to escape evenly under pressure. 4. Stage 4: 110ms after the car crash, the driver moves back into the seat. Most of the gas has escaped from the airbag, and the front view becomes clear again.
I've repaired quite a few airbag issues in vehicles. The most common open circuit in the driver-side inflator circuit occurs at the clock spring under the steering wheel—that rotating connector wears out the wiring during steering, causing an open circuit. Additionally, the terminals and plugs of the airbag control module are prone to oxidation and loosening. The wiring harness near the seats or floor can also get crushed or age into an open circuit. The sensor wiring interfaces aren't very reliable either, often developing poor contact after prolonged bumps. This affects airbag deployment, so don't attempt DIY fixes. Drive to a professional repair shop for diagnostic tool checks to avoid misjudgment. Safe driving is paramount—it's wise to inspect wiring conditions during regular maintenance.
